DZ中华人民共和国地质矿产行业标准DZ/T 0250-2010 煤层气钻井作业规范Specifications for coalbed methane drilling engineering 2011-01-13发布2011-03-01实施中华人民共和国国土资源部发布 目次前言........................................................................................................................................................... III 引言...........................................................................................................................................................IV 1 范围............................................................................................................................................................. 1 2 规范性引用文件.........................................................................................................................................1 3 钻井工程设计.............................................................................................................................................2 3.1 钻井工程设计步骤..........................................................................................................................2 3.2 钻井工程设计书格式......................................................................................................................2 3.3 井身结构设计..................................................................................................................................2 3.4 井口及井控装置设计......................................................................................................................3 3.5 钻井循环介质设计..........................................................................................................................3 3.6 钻柱组合设计..................................................................................................................................5 3.7 固井工程设计..................................................................................................................................6 3.8 取芯设计..........................................................................................................................................7 4 钻前准备及验收.........................................................................................................................................7 4.1 钻前准备..........................................................................................................................................7 4.2 开钻前验收......................................................................................................................................8 5 钻井工程质量要求.....................................................................................................................................8 5.1 井身质量.........................................................................................................